--- /dev/null	2017-06-07 10:58:23.444049309 +0200
+++ new/src/share/vm/gc/g1/g1SerialCollector.hpp	2017-06-08 11:33:24.141897119 +0200
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_GC_G1_G1SERIALCOLLECTOR_HPP
+#define SHARE_VM_GC_G1_G1SERIALCOLLECTOR_HPP
+
+#include "memory/allocation.hpp"
+
+class G1FullGCScope;
+class ReferenceProcessor;
+
+class G1SerialCollector : StackObj {
+  G1FullGCScope*                       _scope;
+  ReferenceProcessor*                  _reference_processor;
+  ReferenceProcessorIsAliveMutator     _is_alive_mutator;
+  ReferenceProcessorMTDiscoveryMutator _mt_discovery_mutator;
+
+  void rebuild_remembered_sets();
+
+public:
+  G1SerialCollector(G1FullGCScope* scope, ReferenceProcessor* reference_processor);
+
+  void prepare_collection();
+  void collect();
+  void complete_collection();
+};
+
+#endif // SHARE_VM_GC_G1_G1SERIALCOLLECTOR_HPP